Groove ball



FIG. 1 is a top view of a groove ball showing my design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is an isometric view thereof; and,

FIG. 8 is another isometric view thereof.

The broken lines are for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for the groove ball, as shown and described. 